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Finding the Fourth Proportional to 550.06, 754.45 and 484.45

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Solution

The fourth proportional to 550.06, 754.45 and 484.45 is: 664.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.06 : 754.45 = 484.45 : x
  2. Step 2: Convert to fraction form
    550.06/754.45 = 484.45/x
  3. Step 3: Cross multiply
    550.06x = 754.45 × 484.45
  4. Step 4: Simplify right side
    550.06x = 365,490.21
  5. Step 5: Solve for x
    x = 365,490.21/550.06
  6. Step 6: Final answer
    x = 664.46

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.